I was due to start sleep training my DS tonight (husband is often away but home for next 10 nights, so doing it when he's home for support and help)... However my little one started with a cold yesterday. It's not too bad but he's a bit snotty. Obviously if he is really unwell I won't start, but if he's a bit snotty and under the weather but not really ill am I best to still wait? (Not doing CC, probably more of a version of PUPD or something like that.